Grommet



FIG. 1 is a perspective view from above of the grommet of the invention;

FIG. 2 is a top plan view of the grommet of FIG. 1;

FIG. 3 is a bottom plan view of the grommet of FIG. 1; and,

FIG. 4 is a front elevation view of the grommet of FIG. 1; the back and sides forming no part of the claimed design.

The broken lines are intended to show environmental structure and form no part of the claimed design. 

The ornamental design for a grommet, as shown and described. 